Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
CURRENT ASSETS
Cash	$ 1,050	$ 1,029
Accounts receivable, less allowance of $40 for doubtful accounts	972	940
Prepaid expenses and other assets	192	159
Assets held for sale	212	212
Total current assets	2,426	2,340
PROPERTY	65,650	65,650
Accumulated depreciation	(35,410)	(34,971)
Net property	30,240	30,679
OTHER ASSETS
Deferred development costs	10,485	10,395
Other noncurrent assets	1,363	1,387
Total other assets	11,848	11,782
TOTAL ASSETS	44,514	44,801
CURRENT LIABILITIES
Accounts payable	684	696
Payroll and employee benefits	310	784
Current portion of accrued retirement benefits	169	164
Deferred revenue	555	24
Other current liabilities	160	179
Total current liabilities	1,878	1,847
LONG-TERM LIABILITIES
Long-term debt	1,235	1,235
Non-current portion of accrued retirement benefits	7,780	7,867
Deposits	2,594	2,449
Deferred revenue	64	215
Other noncurrent liabilities	44	44
Total long-term liabilities	11,717	11,810
COMMITMENTS AND CONTINGENCIES (Note 11)
STOCKHOLDERS' EQUITY
Common stock--no par value, 43,000,000 shares authorized, 19,091,288 and 19,040,273 shares issued and outstanding	79,138	78,584
Additional paid in capital	9,246	9,246
Accumulated deficit	(37,396)	(36,432)
Accumulated other comprehensive loss	(20,069)	(20,254)
Total stockholders' equity	30,919	31,144
TOTAL LIABILITIES & STOCKHOLDERS' EQUITY	$ 44,514	$ 44,801